Rotating Sewer Nozzle Nozzle Size 8.5 Max Pressure 3 600 psi Inlet 3/8 in (F)NPT Material Brass/Stainless Steel GPM @ 800 PSI 3.8 gpm GPM @ 1000 PSI 4.25 gpm GPM @ 1500 PSI 5.21 gpm GPM @ 2000 PSI 6.01 gpm GPM @ 2500 PSI 6.72 gpm GPM @ 3000 PSI 7.36 gpm GPM @ 3500 PSI 7.95 gpm GPM @ 4000 PSI 8.5 gpm